Parameter A, S Versions Unit Conditions/Comments
POWER REQUIREMENTS
Power Supply Voltages
AV
DD
Voltage
16
5 to 10 V nom ± 5% for Specified Performance
DV
DD
Voltage
17
5 V nom ± 5% for Specified Performance
AV
DD
–V
SS
Voltage 10.5 V max For Specified Performance
Power Supply Currents
AV
DD
Current 4 mA max
DV
DD
Current 4.5 mA max
V
SS
Current 1.5 mA max V
SS
= –5 V
Power Supply Rejection
18
Rejection w.r.t. AGND; Assumes V
BIAS
Is Fixed
Positive Supply (AV
DD
and DV
DD
)
19
dB typ
Negative Supply (V
SS
) 90 dB typ
Power Dissipation
Normal Mode 45 mW max AV
DD
= DV
DD
= +5 V, V
SS
= 0 V; Typically 25 mW
Normal Mode 52.5 mW max AV
DD
= DV
DD
= +5 V, V
SS
= –5 V; Typically 30 mW
Standby (Power-Down) Mode 15 mW max AV
DD
= DV
DD
= +5 V, V
SS
= 0 V or –5 V; Typically 7 mW
NOTES
16
The AD7711A is specified with a 10 MHz clock for AV
DD
voltages of 5 V ± 5%. It is specified with an 8 MHz clock for AV
DD
voltages greater than 5.25 V and less
than 10.5 V. Operating with AV
DD
voltages in the range 5.25 V to 10.5 V is guaranteed only over the 0 8C to 708C temperature range.
17
The ± 5% tolerance on the DV
DD
input is allowed provided that DV
DD
does not exceed AV
DD
by more than 0.3 V.
18
Measured at dc and applies in the selected passband. PSRR at 50 Hz will exceed 120 dB with filter notches of 10 Hz, 25 Hz, or 50 Hz. PSRR at 60 Hz will exceed
120 dB with filter notches of 10 Hz, 30 Hz, or 60 Hz.
19
PSRR depends on gain: Gain of 1: 70 dB typ; Gain of 2: 75 dB typ; Gain of 4: 80 dB typ; Gains of 8 to 128: 85 dB typ. These numbers can be improved (to 95 dB
typ) by deriving the V
BIAS
voltage (via Zener diode or reference) from the AV
DD
supply.
Specifications subject to change without notice.
AD7711A–SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS*
(T
A
= 25rC, unless otherwise noted.)
AV
DD
to DV
DD
. . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
AV
DD
to V
SS
. . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
AV
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
AV
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
DV
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
DV
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
V
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V
V
SS
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V
Analog Input Voltage to AGND
. . . . . . . . . . . . . . . . . . . . . . . . . V
SS
– 0.3 V to AV
DD
+ 0.3 V
Reference Input Voltage to AGND
. . . . . . . . . . . . . . . . . . . . . . . . . V
SS
– 0.3 V to AV
DD
+ 0.3 V
REF OUT to AGND . . . . . . . . . . . . . . . . . . . . –0.3 V to AV
DD
Digital Input Voltage to DGND . . . . . –0.3 V to AV
DD
+ 0.3 V
Digital Output Voltage to DGND . . . –0.3 V to DV
DD
+ 0.3 V
Operating Temperature Range
Commercial (A Version) . . . . . . . . . . . . . . . –40rC to +85rC
Extended (S Version) . . . . . . . . . . . . . . . . . –55rC to +125rC
Storage Temperature Range . . . . . . . . . . . . . –65rC to +150rC
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300rC
Power Dissipation (Any Package) to 75rC . . . . . . . . . . 450 mW
Derates Above 75rC . . . . . . . . . . . . . . . . . . . . . . . . . 6 mW/rC
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of the specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ORDERING GUIDE
Model Temperature Range Package Options*
AD7711AAR –40rC to +85rC RW-24
AD7711ASQ –55rC to +125rC Q-24
*R = SOIC, Q = CERDIP.
REV. D
–4–
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD7711A features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE